Moore



(No Model.)

D. MOF. MORE.

INGANDESGENT ELECTRIC LAMP REGULATOR. No. 604,679.

Patented May 24,1898. l

BY H/s /yrromvfr mmf-@ l umn.. wAsmNoToN D c UNiTED STAT-ns Partnr s muon.

DANIEL' MOFARLAN MOORE, OF NEW YORK, N. Y., ASSIGNOR TO THE MOORE ELECTRICAL COMPANY, OF SAME PLACE.

INCANDESCENTELECTRlCLAEVl P REGULATOR.

SPECIFICATION forming part of Letters Patent No. 604,679, dated May 24, 1898. Application filed February I0, 1892. Serial No. 420,943. (No model.)

To all whom, it muy concern:

Be it known that I, DANIEL MGFARLAN MOORE, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Incandescent-Electric- Lamp Regulators, of which the following is a specification.

My invention relates to means for turning up and down the light of an incandescent electric lamp. i

The object of the invention is to provide the lamp with highly-effective means of regulation.

The organization of the device is such that by turning a thumb-screw or its equivalent in one direction the light is increased in intensity and by turningit in the opposite direction the light is diminished to any degree.

The nature of the invention may be understood by the statement that the current of the lamp or part of the current is passed between two terminals which are adapted to be separated and brought together rapidly and automatically, the means for intermittently closing the terminals consisting, essentially,

of a magnet and its armature arranged substantially as in the vibrator of an electric bell.

In order to more clearly set forth the exact nature of the way of carrying out the invention, so that any one versed in the art may construct and use the same, the accompanying drawings are hereunto annexed and described.

Figure l shows a complete equipment of the invention in connection with an electric installation, the same being partly in cross-section, partly in full, and partly in diagram in order to set forth the features in a compact and concise manner. Fig. 2 is a diagram of the modification herein described. Fig. 3 shows a further modification.

In order to set forth the gist of the invention without regard to all the surroundings, such as the bracket for the lamp, dac., only those parts are alluded to which actually are elements of the invention or else are essential to its operation.

In the drawings, a is the filament of any given incandescent electric lamp, and b is the generator. The two elements j ust named are in circuit with each other, while the magnet c and its vibrator, consisting of the thumbscrew e and spring-armature d, are in a shuntcircuit to the said iilament. Adjustment of the said screw adjusts the electrical conditions, and the consequence is that the intensity of the lamp is regulated to any desired limit. The experiment shows that a spark is scarcely visible and non-injurious to 6o the contact-points between the screw e and spring-armature d, which may be tipped with platinum for the purpose of durability. It

is evident that the magnet c and vibrator may be in series with the iilament, and that such an arrangement might be considered preferable, and it is also evident that the principle of the invention remains the same.

In Fig. 2 is shown a modification, as above stated. In this case the currents are rela- 7o tively also arranged in shunt to one another; but it is evident that the same may be modified in practice, as stated in relation to the disposition in Fig. 1. The dynamo is b, as before, and also the thumb-screw and magnet 7 5 are respectively e and c. These elements are in circuit with one another, while the filament a is in a shunt-circuit, which also includes a -second coil c, which is within inductive action to the coil e. The manner of operating 8o is the same as in the case of the disposition shown in Fig. l. Simply turn the screw e in one or the other direction and the light is regulated.

I have tried also the device and arrangement shown in Fig. 3, where the armature is not only on a spring f, but there is also a spring-terminal d', which bears upon the armature as another terminal, and which is controlled as to its pressure on the armature d 9o by the screw e, which can move back and forth, but which is fastened to the spring d.

The current passes through, first, the magnet c, then the armature CZ, then the spring d', and, finally, to the opposite pole of the generator. l

The lamp, whose filament is a, represents, typically, a translating device.

In myPatent No. 502,444, of August l, 1893, I have shown and claimed, in combination loo with certain elements, the opening and closing of the electric circuit at a point within a sealed inclosure either evacuated or containing an inert atmosphere. In this application I claim certain elements, as set forth, in combination with means for automatically alternately opening,` and closing a circuit independently of a surrounding rareed or chemically inert atmosphere.

I claim as my invention I. In a system for regulatingl the current which operates an incandescent electric lamp, the combination with an incandescent electric lamp of a magnet in circuit therewith, means for automatically and Variably opening,` and closing` both the circuit of said magnet and that of said lamp at terminals which are independent of a surrounding,r rareiied or inert gas.

2. An incandescent-electric-lamp regulator, consisting of the combination with the iilament thereof, located Within an evacuated 

